Why did Imam Khomeini put emphasis on spiritual construction of nation?

Israel keeping Palestinian children behind bars in inhumane conditions

Imam Khomeini, the late founder of the Islamic Republic wanted the Palestinian issue to become the center part of Muslim world foreign policy.

Imam Khomeini explained the domain of the Hereafter

Imam Khomeini through his theological works explained at the time of entering the other world, that is, the domain of the Hereafter, the first stage of which is Barzakh.

Imam Khomeini warned against disregarding divine signs

Imam Khomeini through his theological works warned the humanity against disregarding clear divine signs in the world and asked the faithful people to engage in self purification in order to get ready for the Barzakh (an interval of time between the death of man and his resurrection).

Ethics has a special place in Imam Khomeini's way of thinking

In the heart of Imam Khomeini's way of thinking, ethics has a [special] place, and in fact, all areas of knowledge revolve around this pivot.

According to Imam Khomeini, which factor can assist man in spiritual struggle?

Submission is quite a different thing from knowledge, Imam Khomeini explained

According to Imam Khomeini, the submission, which is the gratification and comfort of the heart, is quite a different thing from knowledge, which is the gratification of the mind.

Imam Khomeini used to spend 7th Muharram onward in Karabla

Ayatollah Khatam Yazdi- Ibid, Vol. 3, pp. 24 and 25